On the 40-year anniversary of John Lennon’s assassination, Indianapolis Colts owner Jim Irsay--who owns one of the most killer collections of music (and other) memorabilia, and counts many prominent rockers among his friends--reflects on the magnitude of the tragedy and why he views it as the end of an era. Our Magical Mystery Tour also includes stories about Paul McCartney, Stephen Stills and Pete Townshend and Roger Daltrey.